Home / 20,510.12-28,302.54-12,125

Finding the Fourth Proportional to 20,510.12, 28,302.54 and 12,125

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Solution

The fourth proportional to 20,510.12, 28,302.54 and 12,125 is: 16,731.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.12 : 28,302.54 = 12,125 : x
  2. Step 2: Convert to fraction form
    20,510.12/28,302.54 = 12,125/x
  3. Step 3: Cross multiply
    20,510.12x = 28,302.54 × 12,125
  4. Step 4: Simplify right side
    20,510.12x = 343,168,297.50
  5. Step 5: Solve for x
    x = 343,168,297.50/20,510.12
  6. Step 6: Final answer
    x = 16,731.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.